云母根也。生泰山齐山山谷及琅琊。今惟出齐州。（即济南府历城）其山常暖。冬
不积雪。每岁初冬。州官监取。积久穴深。 凿他石。得之甚难。以白色明莹。云头雨脚。
轻松若野狼牙者为上。黄色者亦重。其上犹带云母者。称绝品也。（别录颂）起为阳石。齐州
拣金山出者最胜。其尖似箭簇者力强。如狗牙者力微。置雪中倏然没迹。写纸上飘然飞举者
真。（庚辛玉册）
气味咸温。右肾命门气分药也。桑螵蛸为之使。恶泽泻菌桂雷丸石葵蛇蜕。畏菟丝。忌
羊血。补命门不足。治阴痿不起。及腰疼膝冷湿痹。妇人子宫久冷。冷症寒瘕。止月水不定。
并结气寒热。腹疼无子。男妇下部虚冷。肾气乏绝。子脏久寒者用之。然石药冷热皆有毒。
亦宜斟酌。（宗 ）且非久服之物。（濒湖） 喉痹为相火急速之病。相火龙火也。宜以火逐
之。一人病缠喉风。表里皆肿。药不能下。用凉药灌鼻中。下十余行。外以阳起石伏龙肝等
分研细。新汲水调。日扫百遍。三日热始退。肿始消。此亦从治之道也。（子和） 阳在外。
阴之使也。阴在内。阳之守也。阴者藏精而起亟。阳者卫外而为固。阳起两得之。（子由） 禀
纯阳之气以生。本经云。气微温。然观出石之山。大雪不凝。则其温气。当不甚微矣。咸温
入右肾。补助阳气。为除积寒宿血留滞下焦之圣药。（仲淳）阴痿不起。精寒无嗣者。同温
补药服之。能令阳道丰隆。总治男子九丑之疾。使人有子。
〔论〕 凡物之禀阳气盛者。无不上行。此山气有独钟而凝为斯石。（如温泉之类不多
有）用之者惟取其气。故以轻松）若野狼牙。着纸即飞举者为佳。夫阳火出于地中。宜其补命
门不足。起阴痿。暖子宫。为男女下焦之圣药。种种证治。皆取其上升之阳。动而不 之气
化。以对待之。第苏颂时已谓难得。迄今用其赝者。不如弗用之为愈也。阴虚火旺者忌之。
阳痿属于失志。（火气闭密不得发越而然）崩漏由于火盛者。并不得服。（仲淳）
〔修治〕 不入汤煎。火 透红。研极细如面。水飞过。日干用。
Muscovite is the root of Yangqishi (Actinolite). It grows in the valleys of Mount Tai, Qi Mountain, and Langya. Currently, it is only produced in Qizhou (i.e., Licheng District, Jinan Prefecture). The mountains there are constantly warm, with no snow accumulation in winter. Every early winter, local officials supervise its extraction. Due to long-term mining, the caves become deep. It requires chiseling through other rocks to obtain it, which is very difficult. Those that are white, bright, and crystal clear, with shapes resembling cloud heads and rain feet, and a light texture like wild wolf teeth, are considered superior. Yellow ones are also valuable; those still bearing muscovite on them are called the finest grade. (Cited from *Bielu* and Su Song)
Yangqishi belongs to yang stones. Those mined from Jianjin Mountain in Qizhou are the best. Those with tips resembling arrowheads have strong potency, while those resembling dog teeth have weak potency. If placed in snow and it instantly leaves no trace, or if written on paper and floats away lightly, it is genuine. (Cited from *Gengxin Yuce*)
The flavor is salty, and the nature is warm. It is a herb acting on the qi aspect of the right kidney and Mingmen (Gate of Vitality). Sangpiaoxiao (Mantis Egg Case) serves as its guiding herb. It is incompatible with Zexie (Alisma Rhizome), Jungui (Cinnamomum Cassia Bark), Leiwan (Fritillaria Thunbergii Bulb), Shi Kui (Suaeda Glauca), and Shetui (Snake Skin). It fears Tusizi (Cuscuta Seed) and should avoid mutton blood. It tonifies the deficiency of Mingmen, treats impotence (Yinwei) with inability to erect, as well as lower back pain, cold knees, and bi-syndrome due to dampness. For women with long-standing cold uterus, cold masses (Hanxia), irregular menstruation, stagnant qi with alternating hot and cold sensations, abdominal pain leading to infertility, and for both men and women with deficiency-cold in the lower jiao, exhaustion of kidney qi, and long-standing cold of the zi zang (uterus), it can be used. However, mineral herbs, whether cold or warm, possess toxicity, and their use should be carefully considered. (Cited from Kou Zongshi) Moreover, it is not a substance for long-term consumption. (Cited from Li Shizhen)
Houbi (Sore throat/Pharyngitis) is a disease caused by the rapid flare-up of Xianghuo (Ministerial Fire), which is also Longhuo (Dragon Fire). It is appropriate to expel it using "fire" methods. A patient suffered from Chantoufeng (Peritonsillar Abscess/Tight Throat Wind), with swelling inside and out, making oral medication impossible. Cold medicines were instilled into the nose, causing more than ten episodes of diarrhea. Externally, Yangqishi (Actinolite) and Fulonggan (Settled Dragon Liver/Kiln Earth) were mixed in equal parts, ground into fine powder, and applied daily one hundred times with fresh water drawn from a well. After three days, the heat subsided and swelling disappeared. This is also a method of treating according to the disease's nature (Congzhi). (Cited from Zhang Zihe)
Yang (Qi) outside is the servant of Yin; Yin inside is the guardian of Yang. Yin stores essence and responds rapidly; Yang protects the exterior and maintains solidity. Yangqishi benefits both aspects. (Cited from Su Zhe)
It is born from pure yang qi. *Benjing* (*Shennong Bencao Jing*) states its qi is slightly warm. However, observing the mountains where this stone is found, where even heavy snow does not freeze, its warming qi must be more than just slightly warm. Salty and warm, it enters the right kidney, supplements yang qi, and is a supreme herb for eliminating accumulated cold, old blood stasis, and stagnation in the lower jiao. (Cited from Chen Shidun) For cases of impotence with inability to erect and cold sperm leading to infertility, taken with warming and tonifying herbs, it can strengthen sexual function and treat the nine deficiencies of men, enabling procreation.
[Discussion]
All things that endow abundant yang qi tend to ascend. The qi of this mountain is uniquely concentrated here, condensing into this stone. (Similar phenomena, such as hot springs, are rare.) Users only seek its yang qi; therefore, those that are light in texture, resemble wild wolf teeth, and float when placed on paper are preferred. Yang fire originates from within the earth, making it suitable for tonifying Mingmen deficiency, restoring erection, warming the uterus, and serving as a supreme herb for diseases of the lower jiao in both men and women. Various treatments utilize its ascending yang, employing dynamic qi transformation to address the condition. However, since Su Song already noted its scarcity, and today fake versions are common, it is better not to use it at all. It is contraindicated in cases of yin deficiency with fire hyperactivity. Impotence due to loss of willpower (where fire qi is closed and cannot vent) and metrorrhagia due to excessive fire should not take this herb. (Cited from Chen Shidun)
[Processing]
Not used in decoctions. Calcined over fire until red, ground extremely finely like flour, processed by water levigation (shui fei), and dried in the sun before use.